Do you know and understand the three methods used to identify sample spaces?

- anonymous

Do you know and understand the three methods used to identify sample spaces?

- chestercat

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- anonymous

- Vocaloid

...well, do you?

- anonymous

A well-defined sample space is one of three basic elements in a probabilistic model (a probability space); the other two are a well-defined set of possible events (a sigma-algebra) and a probability assigned to each event (a probability measure function).

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## More answers

- anonymous

no but can you explain what the three methods used to identify sample spaces are? @Vocaloid

- anonymous

well all it is is all of a sample or what you are testing i've never heard of 3 ways to identify it and im in Stat 3

- Vocaloid

hm, is there like a textbook or something that goes with your class?

- Vocaloid

I guess it would be something like:
1. counting principle
2. tree diagram
3. ????

- anonymous

yea its probably a text book method

- anonymous

i dont know :(

- Vocaloid

for the third one, I would guess making a table or just listing out outcomes

- anonymous

could it be these three?
1. independent event
2. compound event
3. tree diagram

- Vocaloid

maybe, where did you find those answers?

- anonymous

in my textbook

- Vocaloid

go with that then

- anonymous

ok i have more questions :)

- anonymous

Describe and give an example of a compound event?

- anonymous

- anonymous

If you flip three fair coins, what is the probability that you'll get heads on the first two flips and tails on the last flip?

- anonymous

is an example

- Vocaloid

^

- anonymous

whats the answer to that example?

- Vocaloid

uh, the question just asked to describe and give an example, but if you want the answer...

- Vocaloid

flipping three coins means that we can consider each coin separately
1. heads on first flip
2. tails on second flip
3. tails on third flip
calculate each of those three probabilities separately, then multiply

- anonymous

yea

- anonymous

so whats the answer?

- anonymous

.125

- anonymous

or .5^3

- Vocaloid

but do you understand how to find that answer geny?

- Vocaloid

that's the important part

- anonymous

yes :)

- Vocaloid

explain then

- anonymous

oh i was writing an explanation lol

- Vocaloid

geny, please explain how musicdude got the answer 0.5^3

- anonymous

i dont know.. im sorry i didnt want to sound dumb if i said no :(

- anonymous

its .5 *.5*.5 because it is a 1/2 prob of happening for each

- anonymous

do get why now?

- anonymous

yea

- anonymous

its 3 different probs you multiply together because they are compound

- anonymous

so the answer is 0.5^3. How do you say that answer in words?

- anonymous

is it zero . five to the power of 3?

- Vocaloid

yeah, or just 0.125, or 1/8

- Vocaloid

0.5^3 = 0.125 = 1/8
take your pick

- anonymous

awesome. thanks :)

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